Cut-off-regulating device for brick-machines



2 Sheets-Sheet 1.

(No Model.)

C. CHAMBERS, Jr. 'GUT-OPF RBGULATING DEVICE POR BRICK'MAGHINBS.

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(No Model.; 2 sheets-sheet 2.

C. CHAMBERS, Jr.

CUT-OEI1 EEGULATING DEVICE ECE BRICK MACHINES.

UNITED STATES.

PATENT OEEicE.

cYEUs oHAMBERsoE., OEPHILADELPHIA, PENNSYLVANIA.

ACUT-OFF-REGULATING DEVICE FOR BRICK-MACHINES.`

SPECIFICATION forming part of Letters Patent No. 297,674-, dated April29, 1884.

.Application filed December 16, 1883. (No model.)

,nature of a modification of the friction devices whereby the Aspeed ofrotation of the spiral cut-off blade of the Chambers brick-machine,

as described in my Letters Patent No. 207 ,343,

of August 27, 1878, and No. 275,467, of April 10, 1883, is caused to beaccelerated automatically when the bar of clay issues from the die ofthe machine at a greater speed relatively than that of the cut-oft'blade.

In describing the present invention refer- -ence will be made moreespecially to the lastmentioned Letters Patent.

Figure 1 of the annexed drawings is an end elevation of the invention,looking toward the front or die'endrof the brick-machine- Fig. 2 is aside elevation, and Fig. 3 is a similar side view showing the-positionof the friction devices relatively to the cut-off blade. The latterfigure corresponds with Fig. 1'8 of the Patent No'. 275,467, the presentbelt-friction devices being substituted for the cone-clutch and gearingof that gure.

As described upon pages 4 and 5 of the patent last mentioned, theforward end of the shaft X, which carries the cut-off blade Q,(indicated by the broken lines,) runs in a box, Y, with a universaljoint upon the top of a column, Z, which projects from a hollowstandthat engages with a washer, D, bearing against the 'end plate ofthe female part of a coneclutch, which is loose upon the main shaft `Wof the machine, and by its movement (arm D2) increases or permits adiminution of the friction of the clutch-cones, 85o.

In the present modification I make no change -I in the parts abovereferred to, save that I substitute in-lieu of the cone-clutch thecombination of devices which I shall now proceed to `tapering cogsdescribed in my Patent No.

275,467, meshing with the teeth of gear M3 on thev shaft X, whichcarries the cut-off blade Q, I secure a small pulley, J2, similar to K2.

At the end of the, upper arm or limb of a yoke, Y', which yoke ispivoted on the shaft YV, is journaled an idler-roller, B, in line withthe pulleys yK2 and J2, whereby the inward movement of yoke Y forces theidler against a broad belt, Y, which passes around both of said pulleys,as indicated by the broken lines in Fig. 1. The movement of theyokeoutwardly releases the pressure ofthe idler against the belt. Thedegree of friction, therefore, of the latter against the faces ofpulleys K2 and J2 is governed by the throwof the vibrating yoke Y', andthe consequent pressure or release of the idler in .connection with thebelt. The changes in the movement of the yoke upon its pivot thatarenecessary to be made in order to regulate the speed of the cut-offblade Q, Fig. 3, are induced in the manner previously alluded to, thelower arm of yoke Y being provided with an adjustable set-screw, (orscrews,) s, whose end extends into the path of lever D2. It is obviousthat when the lat- `ter is rotated forward-that is, depressed/by hugsthe pulleys K and J l more closely, the

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driving-shaft XV causes the acceleration of the shaft of the cut-offblade. This friction-belt device, with the connections described,constitutes a compensatory expedient/7 whereby the speed of the cut-offblade is regulated according to that of the bar of clay issuing from thedie of the machine, which is practically as sensitive as that shown andset forth in my aforesaid Patent No. 27 5,467 for which device it may besubstituted.

The Weighted hand-lever J is applied in the same manner, and is adaptedto perform the identical function as described in my said patent; and,as it forms no part of the present invention, it is unnecessary todescribe the same.

Having thus described my improvement, I claim- 1. The combination of thecut-oif-blade shaft having gear M, the gear K5, pulleys K2 and JZ, thepivoted yoke having the idler B, and set-screws s, (or theirequivalent,) the arm D2 on rock-shaft B, and the lever D, connectingsaid cutoif-blade shaft and rockshaft, all constructed and adapted tooperate substantially as and for the purpose recited.

2. In a brick-machine of the recited class, the combination, with thecut-off mechanism, of an adjustable friction-belt device, substantiallyas shown and described, whereby, through suitable intermediatemechanism, the movement of the bar of clay issuing from the die ofthemachine is caused to operate said friction-belt device, and therebycauses the same to convey power to and to speed the cutoff mechanismcorrespondingly to the speed of the bar of clay, substantially as setforth.

In testimony whereof I have hereunto affixed my signature this 18th dayof December, A. D. 1883.

CYRUS CHAMBERS, IJR.

Witnesses:

JOHN NoLAN, FRANCIS S. BROWN.

